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Dry Ice Crystal Ball Bubble

How to make a Halloween Crystal Ball with Dry Ice

For the Dry Ice Bubble Experiment you will need:

  • Dry ice pellets
  • Large bowl with a "lip around the top edge"
  • Warm water
  • Small cup for soap mixture
  • Thick shoe string or small strip of an old tshirt
  • Liquid soap
  • Tongs
  • Gloves
  • Towels/paper towels

In a small bowl, mix small amount of liquid soap and water. Place the shoe string into the mixture to soak. Fill the large bowl about 1/3 to 1/2 full of warm water. Using tongs and gloves, place several pieces of dry ice into the large bowl of water. Working quickly, take the soap soaked shoe string and carefully pull it from one side of the bowl to the other. The soap should create a seal successfully trapping the carbon dioxide gas inside the bubble. As more gas is emitted, the dry ice bubble should continue to grow until eventually popping due to the pressure.

Be careful not to get soap solution into the large bowl of water and dry ice or you will "grow" bubbles instead of creating one giant bubble ball! And, please review our dry ice safety tips before using dry ice.

Crystal Ball Experiment